11372436405 has 48 divisors (see below), whose sum is σ = 21525469056. Its totient is φ = 5508466560.

The previous prime is 11372436403. The next prime is 11372436409. The reversal of 11372436405 is 50463427311.

11372436405 is a `hidden beast` number, since 1 + 1 + 3 + 7 + 2 + 4 + 3 + 640 + 5 = 666.

It is not a de Polignac number, because 11372436405 - 2¹ = 11372436403 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 11372436405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11372436403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 515379 + ... + 536991.

It is an arithmetic number, because the mean of its divisors is an integer number (448447272).

Almost surely, 2^11372436405 is an apocalyptic number.

11372436405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11372436405 is a deficient number, since it is larger than the sum of its proper divisors (10153032651).

11372436405 is a wasteful number, since it uses less digits than its factorization.

11372436405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22698 (or 22695 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 11372436405 in words is "eleven billion, three hundred seventy-two million, four hundred thirty-six thousand, four hundred five".